Electric regulation.



. J. L. CREVELING.

ELECTRIC REGULATION.

APPLICATION FILED SEPT.16, 1910.

1,042,770. Patented Oct. 29, 1912.

WITNESSES l/WE/VTOR "UNTTED' STATES PATENT OFFICE.

JOHN Ia. CBEVELING, OF NEW YORK, N. Y.,

ASSIGNOR T SAFETY CAR HEATING AND LIGHTING COMPANXYA CORPORATION OF NJERSEY.

nnnc'rnrc REGULATION;

Specification of Letters Patent.

' Patented Oct. 29,1912.

Application filed September -16, 1810. Seria1'No. 582,2 83.

To all whom it may concemi Be it known that I, JOHN L. CREVELI'NG,

a resident of New York, in the county and State of New York, have invented certain new anduseful Improvements in Electric Regulation, as set forth in the annexed specification .and drawing forming a part thereof. I

My invention pertains to that class of electric regulation whereinit is desired to automatically regulate an electric circuit, in

response to changes tending to take place Within a circuit. 1

My invention has for its particular object to provide means whereby the current n a circuitor; the voltage, across a circuit may be automatically, governedin a predeten mined'manner.

As-my invention is particularly applicable to systems of electric distribution wherein it is desired to hold a constant voltage upon a. translation circuit throughout changes in voltage at the source from which the same is supplied, it will be described with reference to such a system.

The drawing is a diagrammatic representation of one type of system comprehend I in -my invention.

n the drawing 1 represents a dynamo or generator, the positive brush of which isin communication with the lead 2 carried to one side of the storage battery 3"and lamps ortranslating devices 4. The other side of the translating devices 4 is carried to' the main 5 which leads to the contact member 6 in electrical communication with one end of the carbon pile resistance 7 supported as by insulating rods 8 carried by the base 10. The other end of the carbon pile 7 is in electrical communication with the contact member 9 and is connected as by wire 11 with the contact member 12in communication with one end of the carbon pile 13, the other end of which communicates with the conta'ct member 14 from which the lead 15 is earned to the negative side'of the battery 3 and the negative side ofthe generator 1., The com tact members'ti and 14 are provided Withinsulating bushings 17 which engage the screws 16 carried by the movable arms 18 which are attached to the armature 19 of iron or other magnetic material; The armature 19 is free to move upon the rods 20 of brass or other non-magnetic material and its limit of travel -in.a right-handed 'direc-' tion is governed by the nuts 21. The; rods 20 are carried by the magnet frame 22 secured to the base 10 as by the screw 23.

24 is a compression spring normally tending to move the armature 19 away from the-magnet frame 22'. Upon'the member 18 I is placed an insulating member 25 provided with insulating rods 26 for carrying a small to draw the core downwardly and depress the lever 31 in such manner as tolessen the pressure upon 'the carbon pile. 27

35 is a rod pivotally connected with one end of the lever31 and operatively connected with the dash-pot 36 to 'prevent'too sudden movement of the'c'ore 34 if desired.

37 is a spring adjustable as by screw 38 tending to swing the lever 31 in such direc- U011 as to raise the core 34 against the attraction of solenoid 33. The solenoid 33 and dash-pot 36 may be mounted upon a bracket 39 carried by'the base 10.

y 40 is a limiting screw for limiting the I traveltha't 'can'be given the lever 31 by the solenoid 33; One end of the Winding of solei1oid'33-is connected with the lead2 as by means of wires 41 and 42 and the other end with themain 5 as by wire 43.

44 represents aywindin upon themagnet frame 22 having one out connected, as by wire 45 passing through insulating bushing 48,-With one end ofthe carbon pile 27: The

contact member 28, in electrical communication with the other: end of the carbon pile 27, is connected as by wire 46 with the wire 41, The remaining terminal of the coil 44 is connected with the main 5 as by Wire 47.

The practical o eration of my invention is substantially as follows: If the generator 1 be operating and supplymg current "to thestorage battery 3 and translating devices, current will flow through the lead 2, translating devices 4 and main .5. to the contact piece 6, thence through carbon pile 7 to contacting member 9, thence through wire 11 to contacting member 12, carbon pile 13 and contacting 65 may be made in the way" of construction member 14 to lead 15 throu h which it will 1 return to the generator 1. urrent will also flow from the lead 2 through wire 41 and wire 46 to carbon pile 27, through said pile 5 and thence through wire 45 to winding 44 and thence through wire 47 to the main 5. This current will tend to cause the magnet 22-44 to attract the armature 19 against the action of spring 24 in such manner as to compress the carbon piles 7 and 13 and reduce the resistance thereof to a minimum, the degree of pressure brought upon the said piles depending, of course, upon the degree of excitation of the winding 44 which 15 in turn will depend upon the resistance ofthe carbon pile 27 in series therewlth. Current will also flow from the lead 2 through wire 41, wire 42, winding'of solenoid 33 and wire 43 to the main '5. This current will tend to draw the solenoid core 34 downwardly and move the lever 31 against the action of spring 37 so as to increase the resistance 27 and decrease the current in the winding 44 and thus decrease the pressure upon the carbon piles 7 and 13 and increase the resistance thereof, and I so'adjust the spring 37 that when the normal voltage across the translating devices 4 is reached, any increase in voltage will cause the core 34 to be drawn downwardly and the resist-j ance'27 to be increased and any fall in volt-' 'age across the translating devices 4 will allow the spring 37 to raise the core 34 and thus increase the pressure in the carbon; pile 27 and decrease the resistance thereof so as to increase the current flowing in the winding 44 and cause the magnet 22- 14 to increase the pressure upon the piles 7 and 13 and decrease the resistance thereof. Thus it will be obvious that an departure" in .vvo ltage across the translating devices om the normal will cause the resistance of the piles 7 and 13 to be so varied as to compensate for the same. It will also be noted I that as the core 34 is depressed so as to lessen the pressure upon the pile 27 and thus weaken the winding 44 to decrease the pressure upon the piles 7 and 13, the armature 17 carrying the member 25 and the carbon pile 27 will also move in the same direction as does the contact member 28 in such nanner as to tend to cause the carbons 27 to again be compacted and their resistance lowered in such manner as to tend to increase the current in the coil 44 and thus counteract the change made by the-dc ression of core 34 in such manner as wil obviously prevent hunting.

do not wish in any way to limit myself to the exact details of construction indicated in the accompanying drawing which is-a mere diagrammatic representation of one form of apparatus embodying my invention.

It will be obvious that wide departure without departing from the spirit of my invention which is asset forth in the following claims: v

1. Means for regulating an electric circuit comprehending a regulating element, electromagnetic means for controlling the same, electromagnetic means for governing said controlling means, comprehending means whereby increase in current in the last named electromagnetic means causes a decrease in current in the first named electromagnetic means, said means being affected by the first named electromagnetic means.

2. Means for regulating an electric circuit comprehending a resistance varying means, electro-magnetic means tending to decrease the resistance thereof, electro-mag-.

netic means tending to reduce the efiect of the first-named electro-magnetic means, and affected by the action of the first named electro-magnetic means.

3. Meansfor regulating an electric circuit comprehending a resistance varying element in said circult; electromagnetic means tending to reduce the resistance thereof and electro-magnetic means for controlling the first-named electro-magnetic means and afiected bythe action thereof.

4. Means for regulating an electric circuit comprehending resistance varying means, electro-magnetic means for reducing the resistance thereof, a carbon pile in series with said electro-magnetic means and affected by the action thereof and electromagnetic means for varying the resistance of said carbon pile.

5. Means for regulating an electric circuit comprehending a resistance varying element,'electro-magnetic means tending to reduce the resistance thereoflmeans for vary ing the current in said electro-magnetic means aiiected by the operation thereof and electro-magnetic means for varying the effect of the last-mentioned means.

6. Means ,for regulatin an electric circuit comprehending a car on pile, an electro-magnet and an armature separated by a narrow air gap, means whereby attraction between said electro-magnet and its armature, compresses the carbon pile, means for v governing the current in said electro-magnet, comprehending a resistance varying element, afiected. by the motion of said armature to vary the resistance thereof, and electro-magnetic means for controlling the resistance of said last-named resistance element.

7. Means for regulating an electric circuit comprehending current controlling means, an electro-magnet and an armature separated by a narrow air gap, means wherebyattraction between said electro-magnet and its armature lessens the effective resistance of the current controlling means, means for governing the current in said electromagnet comprehending a resistance varying elementaffected by the motion of said arma-' ture to vary the resistance thereof, and electro-magnetic means for regulating the resist-'- ance of said last-named resistance element.

8. Means for regulating an electric circuit comprehending a circuit controlling elel0 and an armature separated by a narrow air gap, Variable resistance for controlling the operation of said electro-magnetic means,

-1neans affected by the motion of said armature tending to vary said resistance and electro-magnetic means for governing said re- 15 sistance.

- 7 JOHN L. CREVELING. Witnesses:

CHAS. MoG. CHAPMAN, M. HEusKovrrz.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents,

' Washington, D. 0. 

